Braided tube to braided flat to braided tube with reinforcing material
A continuous braid structure has one or more first braid sections, each having a respective single flat braid or a respective single tubular braid. A plurality of second braid sections each have at least two flat braids with a gap between them. The second braid sections alternate with the one or more first braid sections. The adjacent first and second braid sections are continuous with each other. A length of material extends through the respective gap of at least one of the one or more second braid sections, so the length of material crosses one or more times between a first side of the continuous braid and a second side of the continuous braid.
1. A method comprising:
(a) operating a braider in a first braiding mode to provide a first braid section having a single flat braid or a single tubular braid;
(b) operating the braider in a second braiding mode, wherein a first plurality of bobbin carriers of the braider move along at least one closed path that does not intersect any other closed path through which a second plurality of bobbin carriers of the braider move, to provide a second braid section having at least two flat braids with a gap therebetween, the second braid section being continuous with the first braid section,
wherein steps (a) and (b) are performed alternately to form a continuous braid having a plurality of first braid sections and one or more second braid sections alternating with each other; and
(c) passing a length of material through the respective gap of one or more of the second braid sections, so the length of material crosses one or more times between a first side of the continuous braid and a second side of the continuous braid.
2. The method of claim 1 , wherein step (c) is performed using one of the group consisting of a shuttle, a robotic arm or a pick and place mechanism.
3. The method of claim 1 , wherein each first braid section has a single flat braid, further comprising:
(d) operating the braider in a third operating mode to provide a third braid section having a single tubular braid adjacent to at least one of the plurality of first braid sections; and
(e) passing the length of material through a longitudinal tubular opening of the tubular braid.
4. The method of claim 3 , wherein steps (d) and (e) are performed to provide a third braid section at each respective end of the continuous braid.
5. The method of claim 4 , wherein:
the continuous braid has at least three first braid sections and at least two second braid sections, and
the length of material is passed through the respective gap of each of the second braid sections and the respective longitudinal tubular opening of each of the third braid sections.
6. The method of claim 1 , wherein:
each of the first braid sections has a tubular braid having a respective longitudinal tubular opening,
the length of material is passed through the respective longitudinal tubular opening of one of the first braid sections at a first end of the continuous braid and one of the first braid sections at a second end of the continuous braid opposite the first end, and
the length of material is passed through the respective gap of two or more of the second braid sections.
7. The method of claim 1 , wherein the first braid section and second braid section comprise a first material, and the length of material comprises a second material different from the first material.
8. The method of claim 7 , wherein the second material has a higher modulus of elasticity than the first material.
9. The method of claim 7 , wherein the second material has a higher density than the first material.
10. The method of claim 7 , wherein the second material is one of the group consisting of nylon, polyester, fiber glass, and carbon.
11. The method of claim 7 , wherein the second material is a wire.
12. The method of claim 1 , wherein step (c) is performed while the braider is in the second braiding mode
13. The method of claim 1 , wherein:
step (a) includes operating the braider with a plurality of bobbin carriers positioned on a plurality of horngears in a first flat braiding mode, to cause each bobbin carrier to move along a respective first closed path that does not intersect a respective first closed path of any other bobbin carrier, and
step (b) includes operating the braider with the plurality of bobbin carriers positioned on the plurality of horngears in a second flat braiding mode, to cause each bobbin carrier to move along a respective second closed path that does not intersect a respective second closed path of any other bobbin carrier,
wherein the second closed paths are different from the first closed paths.
14. The method of claim 13 , wherein the braider is changed from the first flat braiding mode to the second flat braiding mode by activating a plurality of bifurcation gates.
15. A method comprising:
(a) operating a braider in a first operating mode to provide a first braid section having a single tubular braid;
(b) operating the braider in a second braiding mode to provide a second braid section having a single flat braid adjacent the single tubular braid, the second braid section being continuous with the first braid section;
(c) operating the braider in a third braiding mode to provide a third braid section adjacent the second braid section, the third braid section having at least two flat braids with a gap therebetween, the third braid section being continuous with the second braid section,
wherein steps (b) and (c) are performed alternately to form a continuous braid having a plurality of second braid sections and one or more third braid sections alternating with each other;
(d) passing a length of material through a longitudinal tubular opening of the tubular braid and
(f) passing the length of material through the respective gap of one or more of the third braid sections, so the length of material crosses one or more times between a first side of the continuous braid and a second side of the continuous braid.
16. A continuous braid structure comprising:
one or more first braid sections, each having a respective single flat braid or a respective single tubular braid;
a plurality of second braid sections, each having at least two flat braids with a gap therebetween, each of the at least two flat braids having a configuration formed by moving a first plurality of bobbin carriers of a braider along at least one closed path that does not intersect any other closed path through which a second plurality of bobbin carriers of the braider move,
wherein the second braid sections alternate with the one or more first braid sections, the adjacent first and second braid sections being continuous with each other; and
a length of material extending through the respective gap of at least one of the one or more second braid sections, so the length of material crosses one or more times between a first side of the continuous braid and a second side of the continuous braid.
17. The structure of claim 16 , wherein each first braid section has a single flat braid, the structure further comprising:
a respective single tubular braid at each respective end of the braid structure.
18. The structure of claim 17 , wherein the length of material extends through each single tubular braid.
19. The structure of claim 16 , wherein the first braid section and second braid section comprise a first material, and the length of material comprises a second material having a higher modulus of elasticity than the first material.
20. The structure of claim 19 , wherein the second material is one of the group consisting of nylon, polyester, fiber glass, and carbon.
21. The structure of claim 16 , wherein each of the at least two flat braids has a single layer of yarns.